Apparatus for delivering measured quantities of material



Nov. 7, 1950 J. G. NILSSON APPARATUS FOR DELIVERING MEASURED QUANTITIESOF MATERIAL Filed April 26, 1946 is rotatably journalled a pump cylinder2.

Patented Nov. 7, 1950 I, I Gunnar Nilsson, Appelvikcn, Sweden, assignorto Arenco' -Aktiebolag, Stockholm, Sweden, a Swedish jdi nt-stoc kcompany Application April 26, 1946, Serial No. 665,169 ;;.=7 '..InSweden April 28, 1945 3 Claims.

This invention relates to apparatus for deliver- 7 ing measuredquantities of more or less viscous or semi-liquid material. Moreparticularly the in vention relates to apparatus of such kind having adelivery channel and having a valve provided with a passage adapted toperiodically constitute a downwardly directed outlet end. ofsaid'delivery channel. Apparatus of this kindrare well adapted for thedelivery of certainmaterials, but they are afiected with certaindrawbacks when adapted to deliver certain other materials such asjellies, preserves, etc. which are sluggish in flow and have a tendencyto adhere to the wall of the housing of said valve and form stringssuspended from said housing. It is an object of the invention to removesaid drawbacks.

The accompanying drawing shows, by way of example, an embodiment of theinvention.

Fig. 1 is a vertical sectional view of an apparatus embodying theinvention;

Fig. 2 is a sectional view taken on the line IIII of Fig. 1; and

Fig. 3 is a view from below of the parts shown in Fig. 2.

Referring to the drawing, a vertical pipe I is formed integral with apump housing I6 in which A piston 3 adapted to reciprocate in thecylinder 2 is pivotally connected to a connecting rod 4. The connectingrod 4 is also pivoted to a doublearmed lever 5' which is secured to arotatably journalled shaft 6. The free end of the lever carries a roller32 which is pressed by a spring 33 against a cam disc I secured to arotary driving shaft 8.

The cylinder 2 is formed integrally with a toothed flange I! whichmeshes with a toothed rack I8 which constitutes the end of a rod 38. Thelower, forked end 39 of the rod 38 carries a roller I9 which rides on acam disc 20 secured to the shaft 8. The cylinder 2 has an inlet opening22 and an outlet opening 23 for material.

The lower end of the pipe I is formed integral with a substantiallycylindrical valve housing 9 the bottom portion of which is cut out toform a slot 34 having sharp scraper edges Illa. and lb from which thesurfaces 35 extend obliquely upwardly. The valve housing 9 is providedwith a cylindrical bore in which is located a cylindrical plug I I whichis rotatable in said bore. The valve plug II has a passage I2 extendingtransversely therethrough. As shown in Fig. 3 the scraper edges Illa.and IUb of the valve housing coincide substantially with the side edges25 of the mouth I3 of the passage I2 when the valve is open. At

the opposite. rounded-side of the passage-I2 the plug II is equippedwith drip edges 2|. Oneend of the plug I I is formed integrally' 'withajtoothed segment I4, which mesheswith a toothed rack I5. The toothedrack I5 is adapted to reciprocate'lon gitudinally in a guide 30 andcarries afroller 24 which by means of a contractile spring 3I ispressedagainst a cam 26 secured to'the shaft't.

The cams I, 20 and 26 are shap'ed'and secured to the shafts 6 and 8 soas'to impart to the piston-3; the cy1inder 2.and the valve II timedmovements in a manner as hereinafter described. I z I Jars 21 or otherreceptacles to" be filled are by means of a conveyor 28 advancedstepwise laterally into a position below the valve II whereby thecylinder 2 has such an angular position within the housing It that itsoutlet opening 23 is shut and its inlet opening 22 registers with asupply channel 29 for filling material whilst the piston 3 is retractedto the right (Fig. 1), sucking a measured quantity of filling materialinto the cylinder 2. Thereafter, the valve is opened and the cylinder 2is turned into the position as shown in Fig. 1 so that its inlet opening22 is shut and its outlet opening 23 will register with the pipe I.Thereafter or simultaneously, the piston 3 moves to the left (Fig. l)and forces a measured quantity of filling material out of the opening 23and through the pipe I and the valve passage I2 further into the jar 21.Thereafter, the valve is shut by turning the plug II through one quarterof a revolution. Thereby, filling material adhering to the outletopening or mouth I3 of the valve passage I2, will, in dependence on thedirection of rotation of valve plug ll be cut or scraped off at the edgeIlla or Illb and drop into the jar 21. Thus, if the plug II is turned inthe direction as shown by the arrow in Fig. 1 adhering filling materialwill be cut off at the edge Illa. Filling material possibly stilladhering to the cylindrical surface of the valve II will be cut off atthe edge I02) when the plug is opened again. Filling material possiblyaccumulating on the surfaces 35 will flow downwardly back to the scraperedges Ina and lb, and after opening the valve it will be torn oil saidedges by the filling material thereafter being ejected through the plugII and contacting with said accumulated material.

Iclaim:

1. In an apparatus for delivering measured quantities of material, adelivery channel, means for periodically forcing the material downthrough said channel, a valve having a plug provided with a passageadapted to periodically constitute a downwardly directed free outlet endof said delivery channel, said valve having a housing for said plugprovided with an opening having an obliquely downwardly directed cuttingedge engaging said plug and being, adapted to: sub:- stantially coincidewith one edge or said outlet end when said plug is in open position andalso.

for periodically opening and closing said valve past said cutting edge.

2. In an apparatus for delivering; measured quantities of material, adelivery channel, means for periodically forcing the materialdownthrough said channel, a valve having a plug provided with a passageadapted to periodically constitute a downwardly directed free outlet endof said deliver-y channel, said valve having a housing for said plugprovided with an opening having a pair of downwardly directed? cutting:edges engaging and extending longitudinally-of said'plug, said outletend of said passage having a pair of opforming a bottom edge of anobliquely upwardly" P y disposed cutting edges adap ed t0 Subextendingsurface of said housing. and. meansstantially; coincide-with saidcutting edges of said opening when said plug is in open position andbeing interconnected by curved cutting edges,

and meansfor periodically opening and closing saidyalve plugby rotatingsaid plug to move said oppositely disposed cutting edges and said.curved cutting; edges past one of said cutting said channel, a valvehaving a plug provided with a passage adapted to periodically constitutea downwardly directed: free outlet end of said delivery. channel.andhaving. a. cutting edge, said valve. having ahousing for. said plug,provided with. an. opening, having. a surface extending edges-of saidhousing.

JOHAN GUNNAR NILSSON.

} REFERENCES CITED The following references are of" record. in the fileof'thi's patent: V

UNITED SEATES; PATENTS.

